Spark-arrester.



L. T. JACK.

SPARK ARRESTER.

APPLICATION FILED JULY 13. I915.

1,1' 5,7? 3 Patented Oct. 1915.

J j i 7 2& l 12 Witnesses a. zkzwxg Attorneys couumm PLANOGIXM'II c0. WASHINGTON u. c.

LEwIs 'r. JACK, or ivrounrsrnnnnve, IOWA, assreivon IO OLIVER E. MQNAMAR AND RAYMOND vrenmuan; Bern or MOUNT s'rnnmne, IOWA.

asrnnn-an-nnsrnia.

: Specification of IietterslPat-ent.

Patented Get. 5, 1915.

Application area July 13, 1915. Serial No. 39,643.

Tool; whom it may concern; I

Be it known that I, Ln'wrs T. JACK, a cit1;

zen of the United States, residing at Mount Sterling, in the county of Van Buren and State of Iowa, have invented a new andusefnl Spark-Arrester, of which the following is a specification.

The device forming the subject matter of this application is a spark arrester, and one object of the invention is to provide novel means whereby the sparks may be separated from the gases passing through a' stack, novel means being provided for conducting the sparks or cinders downwardly into the smoke box which lies below the stack.

It is within the scope of the invention to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawing :Figure 1 shows in vertical longitudinal section, a portion of a boiler to which the spark arrester forming the subject matter of this application has been applied; Fig. 2 is a vertical transverse section taken through the stack; Fig. 3 is a cross section on the line 33 of Fig. 2.

In the accompanying drawing, the numeral 1 indicates a boiler of any desired form, the fines of the boiler being indicated by the reference character 2.

The numeral 3 indicates the smoke box or combustion chamber, and the stack is shown at 4:, the same preferably flaring slightly as it extends upwardly.

Hinged or otherwise secured to the upper end of the stack 4, as shown at 5, is a lid 6: which may be held in place by a bolt and wing nut 7 or in any other convenient manner.

The stack ii: is provided with an outlet, dr side flue in the form of an elbow 8, opening into the stack at a point relatively near to the base of the stack, In the side flue o1.

outlet 8 maybe disposed a damper ofany desired construction.

Located in the top of the stack 4 and if desired secured to the lid 6 is a depending conical deflector 11. Surrounding the interior of the stack a and secured to the upright wall thereof is an inwardly projecting spark ring 12 of frusto-conical form, the wall of the spark ring 12 being disposed at an angle to the active surface of the deflector 11, as Figs. 1 and 2 will make manifest. The depending point of the deflector 11 preferably enters to a slight extent within the contour of the ring 12. Trough-shaped spark chutes 14 are secured in opposed relation to the wall of the stack 4, the spark chutes 14 at their upper ends opening through the spark ring 12.

It has been found'by practical test, that the exhaust, when delivered into the stack 4 drives the cinders and sparks upwardly through the ring 12 against the deflector 11. By the deflector 11, the sparks or cinders are cast laterally, against the side wall of the stack 4 and are lodged within the contour of the spark ring 12, from which they pass by way of the chutes 14 into the smoke box. The products of combustion proceeding through the flue 8, therefore, are practically free from sparks and may be emitted into the atmosphere without producing conflagration.

The device herein disclosed although of simple form, will be found thoroughly efficient for the ends in view, namely, the removal of sparks and burning material from the products of combustion proceeding from a stack. The structure is of peculiar use upon traction and threshing engines, although it is applicable to locomotive engines and, indeed, to all. devices of the general type shown in the drawings, in which a stoppage of the sparks is found desirable or necessary.

Having thus described the invention, what is claimed is 1. In a spark arrester, a combustion chamher; a stack communicating therewith; a lid closing the top of the stack; a depending conical deflector in the top of the stack; a spark ring projecting inwardly from the wall of the stack and located adjacent the deflector and a spark chute opening through the ring; the stack being provided with a gas-escape located below the ring and constituting an outlet for the chamber.

2. In a spark arrester, a combustion chamber; a stack communicating therewith; a lid closing the top of the stack; a depending conical deflector in the top of the stack; a frusto-conical spark ring projecting inwardly from the Wall of the stack, the Wall of the ring being disposed at an angle to the active surface of the deflector; a spark chute opening through the ring and extended downwardly along the side of the stack; and a gas-escape for the stack, opening into the stack below the ring and constituting an outlet for the chamber.

In testimony that I claim the foregoing as my oWn, I have hereto affixed my signature in the presence of tWo Witnesses.

LEWIS T. JACK. lVitnesses:

O. E. MoNAuAR, C. A. WATSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

